P R E L I M I N A R Y
Table 8. Top Boot Sector/Sector Block Addresses
for Protection/Unprotection
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be
programmed with its corresponding programming al-
gorithm. However, the autoselect codes can also be
accessed in-system through the command register.
Sector/
Sector
A20–A12
Sector Block Size
SA0
000000XXX
64 Kbytes
000001XXX,
000010XXX
000011XXX
SA1–SA3
192 (3x64) Kbytes
SA4–SA7
SA8–SA11
0001XXXXX
0010XXXXX
0011XXXXX
0100XXXXX
0101XXXXX
0110XXXXX
0111XXXXX
1000XXXXX
1001XXXXX
1010XXXXX
1011XXXXX
1100XXXXX
1101XXXXX
1110XXXXX
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Tables 15 and 16. This
method does not require VID. Refer to the Autoselect
Command Sequence section for more information.
SA12–SA15
SA16–SA19
SA20–SA23
SA24–SA27
SA28–SA31
SA32–SA35
SA36–SA39
SA40–SA43
SA44–SA47
SA48–SA51
SA52–SA55
SA56–SA59
Sector/Sector Block Protection and
Unprotection
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
8).
111100XXX,
111101XXX,
111110XXX
SA60–SA62
192 (4x64) Kbytes
SA63
SA64
SA65
SA66
SA67
SA68
SA69
SA70
111111000
111111001
111111010
111111011
111111100
111111101
111111110
111111111
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
18
Am49DL32xBG
July 19, 2002
CYPRESS [ CYPRESS ]
